Anyone experience a lot of false positives with the valentine one? If my V1 is at i-Drive screen or higher (holding it in my hand), I get a constant false positive coming from behind. I've had no choice but to unplug it.

Something in my 550i must be broadcasting a lot of interference.

I have mine mounted just below the rear view mirror and V1 works fine (there's the usual X-band alarms, but not constant as you would describe it)

If you have active cruise control, the laser may trigger the V1, but you mentioned that it is coming from behind, so not sure what it could be...